Hi there,
Any luck since?
I don't know how familiar you are with the types of 'discharge' the female body has. If you're not, it would be well worth scrolling through many of the posts on this site, and also well worth reading Toni Weschler's Taking Charge of Your Fertility. I am saying this because the thick white discharge might simply be cervical mucous. This usually builds up thick at ovulation time (a sure sign of impending ovulation), but it sometimes appears at other times (not sure exactly why).
While TTC I have learned so much about the body through this message board, google searches, and that book!
Let us know how you get on